STIGA Three-Star Balls White. These balls are a standard 40mm and meet International Table Tennis Federation (ITTF) requirements for size and weight. The superior performance of these balls supports enhanced ball control longer volleys consistent bounce and excellent spin. Features of STIGA Three-Star Balls Superior quality for tournament play Six white 3-star balls 40mm ITFF regulation size and weight USA Table Tennis (USATT) approved Offers superior bounce spin and control Package Contents: STIGA Three-Star Balls STIGA T1434: Three-Star Balls White